High-hardness alloy steel material and preparation method thereof

Abstract

The invention relates to a high-hardness alloy steel material which contains the following chemical components in percentage by mass: 3.5-3.7% of carbon, 1.1-1.3% of silicon, 7.0-7.2% of manganese, 0.02-0.05% of molybdenum, 1.6-1.8% of copper, 2.4-2.6% of nickel, 0.006-0.009% of vanadium, at most 0.030% of P, at most 0.030% of S and the balance of iron. By using the raw material combination of the manganese, nickel, molybdenum and the like, the proportion, production technique and feed sequence are reasonably arranged, so the formed alloy material has favorable comprehensive mechanical properties, especially has very high strength and high hardness and has the advantages of excellent abrasion resistance, excellent corrosion resistance and excellent heat resistance. Part of scrap iron is used as the raw material, thereby enhancing the quality stability and uniformity of the alloy. The material is suitable for tools, cutters and the like. The refining agent is added to lower the porosity by 1-2 degrees.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a high-hardness alloy steel material and a preparation method thereof. Background technique [0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school Low-carbon alloy steel, etc., so far, although alloy steel technology has been greatly developed, there are still many problems, such as wear resistance, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, Costs cannot be taken into account. In many cases, the production requirements cannot be met, and further improvements are needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and ...

AI Technical Summary

Problems solved by technology

[0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school Low-carbon alloy steel, etc., so far, although alloy steel technology has been greatly developed, there are still many problems, such as wear resistance, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, Costs cannot be taken into account. In many cases, the production requirements cannot be met, and further improvements are needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and provide impetus for social development. There are still many tasks to be done. difficult